Third grader Marquet Williams, right, and other students await instruction from their teacher Courtney Jackson, left, at Adelaide Davis Elementary School on Nov. 26, 2012 in Washington, D.C. Last week DCPS Chancellor Kaya Henderson proposed closing 20 under-enrolled schools in the District. Davis Elementary is one of 20 schools in the DCPS system included in the school closure proposal. There are currently 178 students enrolled in Davis Elementary and the second floor of the school is only used for music classes and the library...CREDIT: Lexey Swall for The Wall Street Journal.DCSCHOOLS